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Ducted propeller with equal forward and reverse thrust force

An equal thrust, forward and reverse technology, applied in the direction of rotary propellers, ship propulsion, propulsion components, etc., can solve the problems of insufficient key technology, immature theoretical research, and limitations in popularization and application, and achieve high efficiency and improved propulsion. Efficiency, the effect of improving maneuverability

Active Publication Date: 2016-11-09
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research on it is very insufficient, the theoretical research is immature, the key technology is not up to standard, and the popularization and application are greatly restricted.

Method used

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  • Ducted propeller with equal forward and reverse thrust force
  • Ducted propeller with equal forward and reverse thrust force
  • Ducted propeller with equal forward and reverse thrust force

Examples

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Embodiment Construction

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] Combine below Figure 1~7(b) The forward and reverse equal-thrust catheter propeller device of the present invention is introduced in detail. figure 1 The general layout of the propeller is given, mainly including the propeller 1, the shroud 4, the propeller hub 3, the hub cap 2 and the nacelle 5 and so on. Each blade of the propeller 1 is fixed on the propeller hub 3, and the spinner 4 is on the periphery of the propeller.

[0020] Fig. 2 has provided the overall view of the propeller, propeller hub, hub cap and nacelle of this propeller, propeller hub 3 hub diameter ratio is 0.3-0.35, and the diameter of propeller hub 3, hub cap 2 and nacelle 3 are identical, hub cap 2 and the shape of the end of the nacelle 5 are the same, and both adopt an elliptical shape, thereby ensuring the same inflow at the front and rear ends. The...

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Abstract

The invention provides a ducted propeller with equal forward and reverse thrust force. According to the ducted propeller, on the condition that the rotating speed is constant, thrust force same in magnitude and opposite in direction can be generated when a screw propeller rotates forwardly and reversely, and the propulsive efficiency is high. In order to guarantee that the same inflow condition is provided for forward rotation and reverse rotation of the screw propeller, a fairing with the airfoil profile that the outside of the fairing is flat, the inside of the fairing is convex, and the axial section is symmetric front and back is designed. In order to guarantee that the thrust force is equal when the screw propeller rotates forwardly and reversely, special design is conducted for propeller blades, fusiform sections are adopted for radius profiles, fan-shaped blades are free of side or longitudinal inclination and are provided with wide blade tips, and the whole screw propeller is arranged in the middle of the fairing. A propeller hub, a hub cap and a cabin are equal in diameter and streamlined in shape, and the end of the hub cap and the end of the cabin have the same shape. The ducted propeller with the equal forward and reverse thrust force is simple in structure, easy to realize, and capable of greatly facilitating improvement of the maneuvering property of an underwater robot.

Description

technical field [0001] The invention relates to a catheter pusher, in particular to a forward and reverse equal thrust catheter pusher. Background technique [0002] Underwater robots have broad application prospects in both military and civilian use, and can complete various tasks such as ocean exploration and development, underwater dangerous operations, emergency rescue and salvage, intelligence / surveillance / reconnaissance, and anti-submarine, and can be used repeatedly. It has great practicality and flexibility. [0003] At present, the most widely used propulsion method for underwater robots is propeller propulsion, including ordinary propellers, ducted propellers, and ducted propellers. As the core component of an underwater robot, the thruster has a great influence on its performance in all aspects. With the improvement of the maneuverability and maneuverability of underwater robots in recent years, the requirements for propeller propulsion methods are getting highe...

Claims

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Application Information

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IPC IPC(8): B63H1/14B63H1/26B63H5/16
CPCB63H1/14B63H1/26B63H5/16
Inventor 王超叶礼裕常欣孙帅梁宁杨林支玉昌夏琨孙盛夏王锡栋
Owner HARBIN ENG UNIV
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